“The secret of life is honesty and fair dealing. If you can fake that, you made it!”
Groucho Marx, Misattributed
Provenance of the "Secret of life"
In the late 20th century, quotation compilers began substituting "acting" or "sincerity" with "fair dealing" or "the secret of life" to make it an all-purpose cynical proverb.
Because of its sharp, cynical punchline targeting bourgeois morality and business ethics, compilers simply attached it to Groucho Marx — a common phenomenon known in lexicography as "quote capture," where an unattributed wisecrack gravitates toward a famous wit.
Arthur Bloch & Murphy's Law (1980)
In Arthur Bloch's 1980 book Murphy's Law Book Two, the aphorism was phrased as: "The secret of success is sincerity. Once you can fake that you've got it made", where it was erroneously dubbed "Giraudoux's Rule" (ascribing it to French dramatist Jean Giraudoux, who died in 1944 without any record of having coined it).
George Burns Popularization (1980–1991)
Comedian George Burns helped cement the quip in the public consciousness by using variations of it in his stand-up routines and memoirs, including The Third Time Around (1980)
"To be a fine actor, when you're playing a role you've got to be honest. And if you can fake that, you've got it made."
Burns also frequently credited versions regarding "sincerity" to old Hollywood studio heads like Louis B. Mayer .
Television & Print Spread (1969)
In the April 25, 1969 issue of Life magazine, actor Ed Nelson (playing Dr. Michael Rossi on the hit soap opera Peyton Place) echoed the line regarding his profession
"I've found that the most important thing for an actor is honesty... And when you learn how to fake that, you're in."
The Earliest Known Attestation (1962) An Anonymous Stage Actor
The earliest documented version appeared in April 1962 in Leonard Lyons' syndicated Broadway column, The Lyons Den. Oscar-winning actress Celeste Holmrecounted a story about trends in modern theater:
"Westinghouse Broadcasting Co. invited a panel of performers — including Celeste Holm and Shelley Berman — to discuss the trends in show business. Miss Holm spoke of the vogues in acting, and said she heard one actor say: 'Honesty. That's the thing in the theater today. Honesty… and just as soon as I can learn to fake that, I'll have it made.'"
